<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>

 <div id="app">
   {{msg}},imycode
   <h3 v-text="msg">,imycode</h3>
 </div>
 <script src="../vue.js"></script>
 <script>
   //参数为对象类型
   const vm=new Vue({
     el:"#app",
     data:{
       msg:"hello",
     }
   })
 </script>
</body>
</html>